So you’re saying there no such rule as 2(ab)²=2a²b².
That would mean 2(81)2 is 128. You are the one saying it's not 2a2b2, because you think it's 22a2b2, and that 2(81)2 is 256. I'm not touching anything without exponents because exponents are where you are blatantly full of shit.
if it has been written as 2(ab)², not if it has been written a(b+c)²
Source: your ass. Every published example disagrees, and you just go, nuh-uh, that up-to-date Maths textbook must be wrong. You alone are correct on this accursed Earth.
Hey look, another one of the textbooks you insist I read says you're completely wrong: "The multiplication sign is often not included between letters, e.g. 3ab means 3 a b." Page 31 of the PDF... right above where you've dishonestly twisted the "expanding brackets" text. Next page: "3(x+y) means 3(x+y)."
Page 129 of that PDF, exercise 5, question 14: simplify 2(e4)2. The answer on PDF page 414 is 2e8. Your bullshit would say 4e8.
Right below that, exercise 5, question 4: 4(44)4. The answer on PDF page 414 is 1.72x1010. The bullshit you've made up would be 1.10x1011. 5 questions 7, 9, 10, and 11 also have the same a(b)c format as 2(8)2, if you somehow need further proof of how this actually works.
PDF page 134, exam practice question 10a, simplify 3(q2)2. PDF page 415 says 3q6. Your bullshit says 9q6.
Damn dude, that's five textbooks you chose saying you're full of shit, and zero backing you up. One more and I get a free hoagie. Your bullshit has brought us to max comment depth.
If 5(4)2 is 516 then 2(8)2 is 264.
I get a free hoagie.